EP0062336B1 - Montage et procédé pour graver une information dans un support de gravure en métal - Google Patents

Montage et procédé pour graver une information dans un support de gravure en métal Download PDF

Info

Publication number
EP0062336B1
EP0062336B1 EP82102851A EP82102851A EP0062336B1 EP 0062336 B1 EP0062336 B1 EP 0062336B1 EP 82102851 A EP82102851 A EP 82102851A EP 82102851 A EP82102851 A EP 82102851A EP 0062336 B1 EP0062336 B1 EP 0062336B1
Authority
EP
European Patent Office
Prior art keywords
cutting
carrier
information
stylus
cuttable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82102851A
Other languages
German (de)
English (en)
Other versions
EP0062336A1 (fr
Inventor
Horst Redlich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TELDEC Schallplatten GmbH
Original Assignee
TELDEC Telefunken Decca Schallplatten GmbH
TELDEC Schallplatten GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TELDEC Telefunken Decca Schallplatten GmbH, TELDEC Schallplatten GmbH filed Critical TELDEC Telefunken Decca Schallplatten GmbH
Priority to AT82102851T priority Critical patent/ATE8543T1/de
Publication of EP0062336A1 publication Critical patent/EP0062336A1/fr
Application granted granted Critical
Publication of EP0062336B1 publication Critical patent/EP0062336B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/685—Intermediate mediums
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/72—Groove formations, e.g. run-in groove, run-out groove

Definitions

  • the invention relates to a device and a method for cutting information into a metallic cutting support according to the preambles of claims 1 and 10.
  • the invention has for its object to improve the quality of sound recording on metallic cutting carriers compared to paint films.
  • the invention enables the signal-to-noise ratio to be increased by more than 10 dB compared to conventional recording in paint film.
  • the formation of an ultrasonic vibration of the cutting stylus reduces the cutting resistance in such a way that a high quality of the recording is achieved.
  • An independent excitation of the ultrasound frequency automatically results in the desired ultrasound amplitude, i. H. with a small depth of cut there is a small amplitude, with a large depth of cut a large amplitude. No ultrasound can be detected at cutting depths below 10 micrometers.
  • a cutting stitch I 1 is shown, which is attached to a bracket 3 which is suspended in a bearing 4 freely movable.
  • the cutting stylus 1 is excited electrodynamically via the drive coil 6.
  • the cutting stylus 1 has such a position with respect to the cutting carrier 2 that a groove is cut into the cutting carrier 2 when the fixed cutting stylus 1 moves relative.
  • the modulation of the groove by the information to be recorded is carried out by electromagnetic excitation of the coil 6, which is only shown schematically.
  • a chip 5 is formed which can be expediently removed without disrupting the cutting process.
  • Fig. 2 the cutting process is shown in an enlarged view.
  • the chip 5 is lifted by the cutting stylus 1 during the cutting.
  • the longitudinal axis 15 of the cutting stylus 1 is set at an angle 9 with respect to the vertical 10 of the cutting support 2.
  • the wedge angle 7 must not be smaller than the largest pitch angle 11 of the modulation 8 prescribes. At audio frequencies, the largest occurring slope angle 11 of the modulation 8 is approximately 25 °.
  • the angle 13 between the rear flank 12 of the cutting stylus 1 to the front edge 14 is approximately 45 ° with conventional cutting styluses.
  • the remaining angle 9 to the vertical is in this . sem example then about 20 °.
  • FIG. 3 shows a frequency diagram of the acoustic vibrations cut into the cutting support.
  • a frequency spectrum 19 with a certain amplitude 16 results. If an ultrasound frequency 17 of approximately 50 kHz is superimposed on this frequency spectrum 19 to be recorded, an almost interference-free result is obtained .e accumulation.
  • the amplitude 18 of the ultrasound frequency 17 is dependent on the amplitude 16 of the recorded useful signal and is in the range below 1 pm.
  • the ultrasonic frequency 17 is generated at the aforementioned relatively large angle of attack 9 of the cutting stylus 1 with respect to the perpendicular 10 of the cutting carrier 2 and a certain dimensioning of the system parameters by the cutting system itself.
  • the amplitude 18 of the ultrasound frequency 17 depends on the depth of cut of the useful signal 19. If the depth of cut is less than 10 ⁇ m, no noticeable ultrasound will appear or will no longer exist. The amplitude 18 increases when the depth of cut of the useful signal 19 increases.
  • the frequency of the ultrasonic vibration 17 essentially results from the mass and the spring properties of the cutting stylus 1, the cutting stylus holder 3 and the material of the cutting carrier 2.
  • the generation of ultrasound is only advantageous for a metallic cutting carrier 2, especially if the cutting layer of the cutting support 2 has copper with a Vickers hardness of approximately 200.
  • the amplitude 18 of the ultrasound generated also depends on the size of the angle of attack 9. At an angle of 0 ° there is no noticeable ultrasound.
  • the cutting stylus 1 is preferably made of diamond.
  • the holder of the cutting stylus 1 must be constructed with very little damping. While a method and apparatus for electro-mechanical recording a modulation of short wavelength in a metal die is known from DE-OS 2,629,492 already known, but in this known method is in contrast to the inventions dun g just tried all resonances in cutting to switch off frequencies that do not match the signal frequencies by using different damping materials. The generation of ultrasound frequencies is virtually prevented there.
  • the self-excited ultrasound homogenizes the tensioning process by reducing the cutting resistance. Since the generated ultrasound frequency is above, expediently at least twice as high as the highest frequency to be recorded, there is no disturbing signal when reproducing a record produced by the method according to the invention.
  • Fig. 4 shows an embodiment of the cutting stylus.
  • a spiral track 20 is cut into the recording medium 2 with the aid of the cutting stylus 1.
  • two driving arms 21 and 22 are provided, which are at an angle of. Are arranged 90 ° to each other.
  • the arms 21 and 22 act on an aluminum tube 23 which carries the cutting stylus 1, which advantageously consists of diamond.
  • Fig. 5 shows the arrangement of the cutting device from the side.
  • the bracket 3 consists here of the aluminum tube 23, which is dampened in the bearing 4 but is softly suspended.
  • the cutting stylus 1 is inclined relative to the perpendicular to the recording medium by the angle of attack 9.
  • the low frequency (NF) supplied to the cutting stylus via the driving arms 21 and 22 causes a deflection along the aluminum tube according to FIG. 5a.
  • This deflection is superimposed on the generated ultrasonic vibration (HF), which can have 1 or more antinodes as shown in FIG. 5b along the aluminum tube 23 as partial resonance of the cutting device.
  • the ultrasonic vibration is thus superimposed on the LF vibration and recorded on the recording medium.
  • the resonance arises from the fact that a force is exerted on the cutting stylus by the cutting layer and causes it to vibrate together with the tube 23.
  • Metallic cutting layers made of copper can be used advantageously for the invention.
  • the copper is deposited with a certain Vickers hardness. It has been shown that the independent excitation of an ultrasonic frequency can be achieved, in particular, with a Vikkers hardness of the cutting layer of 160 to 220, in particular if the cutting layer can still be recrystallized in the specified hardness range after the information has been cut.
  • the almunium tube 23 used has a length of approximately 12 mm with a diameter of approximately 2.5 mm, the outer diameter of the tube tapers on the suspension side 4 to a diameter of approximately 1 mm. This provides a relatively soft clamping. With a length of the diamond of 2-3 mm with a cross-sectional area of approximately 0.6 mm 2 and a copper cutting layer with a hardness of approximately 160 kg / mm 2 , an ultrasonic vibration of 60-70 kHz results.

Claims (11)

1. Dispositif de gravure d'une information sur un support métallique (2) au moyen d'un burin (1) qui, excité électrodynamiquement, grave sur le support l'information à enregistrer sous forme d'une piste lisible mécaniquement, pour la production d'audiodisques en particulier, l'angle d'inclinaison (9) entre l'axe longitudinal (15) du burin (1) et la perpendiculaire (10) au plan du support de gravure (2) étant au moins égal à 10°, ledit dispositif étant caractérisé en ce que
a) l'angle d'inclinaison (9) est au maximum égal à la valeur pour laquelle le flanc arrière (12) du burin (1) ne vient pas en contact avec le support pour l'angle de pas (11) maximal de la modulation (8) apparaissant dans l'information à enregistrer; et
b) la masse et les propriétés élastiques du burin (1), des pièces (3, .6) excitées avec ce dernier lors de l'opération de gravure, et du support de gravure (2) sont adaptées de façon que pour vaincre plus facilement la résistance de gravure, l'opération de gravure excite une oscillation (17) du burin, qui est superposée à l'information à anregistrer et dont la fréquence est nettement supérieure à la fréquence maximale de l'information à enregistrer.
2. Dispositif selon la revendication 1, caractérisé en ce que l'angle formé par l'axe longitudinal (15) du burin (1) et la perpendiculaire (10) au plan du support de gravure (2) est d'environ 10-15°.
3. Dispositif selon revendication 1, caractérisé en ce que l'oscillation (17) est au moins égale au double de la fréquence maximale de l'information à enregistrer.
4. Dispositif selon revendication 1, caractérisé en ce que le burin (1) est en diamant.
5. Dispositif selon revendication 1, caractérisé en ce que la masse du burin (1) et des pièces (3, 6) mobiles avec ce dernier, ainsi que leurs propriétés élastiques et celles du support de gravure (2) sont dimension.nées de façon qu'une oscillation ultrasonore > 40 kHz s'autoexcite et se superpose à l'information.
6. Dispositif selon revendication 5, caractérisé en ce que la couche gravée du support (2) est essentiellement en cuivre.
7. Dispositif selon revendication 1, caractérisé par un amortissement minimal du burin et des pièces (3,6) excitées avec ce dernier.
8. Dispositif selon revendication 1, caractérisé en ce que la couche gravée du support est recristallisable après la gravure de l'information et sa dureté Vickers est de 160 à 220 kg/mm2 pendant la gravure.
9. Dispositif selon revendication 8, caractérisé en ce que la couche gravée est essentiellement constituée par du cuivre déposé galvani- quement.
10. Procédé de gravure d'une information sur un support métallique (2) par un burin (1) excité électrodynamiquement, qui grave sur le support (2) l'information à enregistrer sous forme d'une piste lisible mécaniquement, en particulier pour la production d'audiodisques, le support métallique (2) non gravé présentant une dureté Vickers prédéterminée, ledit dispositif étant caractérisé en ce que
a) l'opération de gravure est effectuée de façon à superposer à l'information à graver une oscillation (17) excitée par l'opération de gravure et dont la fréquence est nettement supérieure à la fréquence maximale de l'information à enregistrer; et
b) par suite du dimensionnement et du réglage de la masse et des propriétés élastiques du burin (1), des pièces (3, 6) excitées avec ce dernier pendant l'opération de gravure, et du support de gravure (2), l'amplitude de l'oscillation superposée dépend de la pro- findeur de gravure de l'information à enregistrer, de façon que la résistance de gravure soit plus facilement surmontée par l'oscillation excitée (17).
11. Procédé selon revendication 10, caractérisé en ce que la dureté Vickers du matériau du support de gravure (2) est comprise entre 160 et 220.
EP82102851A 1981-04-08 1982-04-03 Montage et procédé pour graver une information dans un support de gravure en métal Expired EP0062336B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102851T ATE8543T1 (de) 1981-04-08 1982-04-03 Einrichtung und verfahren zum schneiden einer information in einen metallischen schneidtraeger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813114108 DE3114108A1 (de) 1981-04-08 1981-04-08 Einrichtung und verfahren zum schneiden einer information in einen metallischen schneidtraeger
DE3114108 1981-04-08

Publications (2)

Publication Number Publication Date
EP0062336A1 EP0062336A1 (fr) 1982-10-13
EP0062336B1 true EP0062336B1 (fr) 1984-07-18

Family

ID=6129632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102851A Expired EP0062336B1 (fr) 1981-04-08 1982-04-03 Montage et procédé pour graver une information dans un support de gravure en métal

Country Status (6)

Country Link
US (1) US4484320A (fr)
EP (1) EP0062336B1 (fr)
JP (1) JPS57178498A (fr)
AT (1) ATE8543T1 (fr)
DE (2) DE3114108A1 (fr)
DK (1) DK149727C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3273370D1 (en) * 1981-11-16 1986-10-23 Teldec Schallplatten Gmbh Method and device for cutting information into a record carrier
DE3527606C1 (de) * 1985-08-01 1986-07-10 TELDEC Schallplatten GmbH, 2000 Hamburg Verfahren zur Aufzeichnung eines Informationssignals und Einrichtung zur Durchfuehrung des Verfahrens
JPH058542Y2 (fr) * 1986-11-27 1993-03-03
DE3808134A1 (de) * 1988-03-11 1989-09-28 Dmm Mastertechnik Gmbh Fuer In Halterung fuer einen schneid- und praegestichel
DK3217401T1 (da) * 2016-03-10 2017-12-11 Joanneum Res Forschungsgmbh Fremgangsmåde til fremstilling af et analogt audiolagringsmedium med høj opløsning

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216051A1 (de) * 1972-04-01 1973-11-22 Ted Bildplatten Verfahren zur mechanischen signalaufzeichnung und anordnung zur ausuebung des verfahrens

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1055547A (fr) * 1952-04-21 1954-02-19 Enregistrement et reproduction des sons par ultrasons modulés
GB727424A (en) * 1952-07-03 1955-03-30 Cosmocord Ltd Improvements in and relating to sound and like recording apparatus
US3490771A (en) * 1963-01-25 1970-01-20 Columbia Broadcasting Syst Inc Sound recording method and apparatus
US3824352A (en) * 1973-04-30 1974-07-16 Zenith Radio Corp Stacked piezoelectric transducer acting as quarter-wave resonator for recording video information
US4044379A (en) * 1975-06-30 1977-08-23 Rca Corporation Method and apparatus for electromechanical recording of short wavelength modulation in a metal master
US4060831A (en) * 1976-10-12 1977-11-29 Rca Corporation Wideband electromechanical recording system
DE2811888C3 (de) * 1978-03-18 1980-11-20 Teldec Telefunken-Decca-Schallplatten Gmbh, 2000 Hamburg Verfahren zur Herstellung einer mit einer Rillenmodulation versehenen Metallmatrize
DE2935579C2 (de) * 1979-09-03 1984-10-04 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Vorrichtung zum Schneiden einer spiralförmigen Aufzeichnungsrille

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216051A1 (de) * 1972-04-01 1973-11-22 Ted Bildplatten Verfahren zur mechanischen signalaufzeichnung und anordnung zur ausuebung des verfahrens

Also Published As

Publication number Publication date
ATE8543T1 (de) 1984-08-15
DK149727C (da) 1987-07-13
EP0062336A1 (fr) 1982-10-13
DK149727B (da) 1986-09-15
DK149182A (da) 1982-10-09
DE3260397D1 (en) 1984-08-23
US4484320A (en) 1984-11-20
JPS57178498A (en) 1982-11-02
DE3114108A1 (de) 1982-10-28

Similar Documents

Publication Publication Date Title
DE2629492C2 (de) Verfahren und Schneidkopf zum Herstellen einer Matrize für einen Aufzeichnungsträger
DE2517915C3 (fr)
CH650610A5 (de) Magnetkopfanordnung fuer die aufzeichnung und wiedergabe von videosignalen.
EP0062336B1 (fr) Montage et procédé pour graver une information dans un support de gravure en métal
DE10085246B4 (de) Verfahren und Vorrichtung für eine verbesserte Einstellung des statischen Rollwinkels
DE2514514B2 (fr)
DE2805322C2 (de) Drehbarer Informationssignal-Aufzeichnungsträger und Aufzeichnungsanordnung zur Herstellung des Informationssignal-Aufzeichnungsträgers
DE2616119A1 (de) Drehkopfanordnung
DE3012586C2 (fr)
DE3028363A1 (de) Plattenspieler
DE2319823A1 (de) Plattenschneidgeraet
DE2331538C3 (de) Halterungsvorrichtung für einen Schneidstichel
DE2935579C2 (de) Vorrichtung zum Schneiden einer spiralförmigen Aufzeichnungsrille
DE3048900A1 (de) "vorrichtung zum elektromechanischen schneiden von aufzeichnungen"
DE4143201C2 (de) Drehkopftrommel
DE1422549C3 (fr)
DE3239616C2 (fr)
DE3048901A1 (de) "vorrichtung zum elektromechanischen aufzeichnen von informationen"
DE3409794A1 (de) Stifthalter fuer eine signalaufnehmerpatrone
DE1940384C3 (de) Elektrisches Verfahren zum Harmonisieren des Grundtonverlaufs bei der Sprachsynthese und Schaltungsanordnung
DE877216C (de) Verfahren zur Herstellung von Nadeltonaufzeichnungen
DE971917C (de) Verfahren und Vorrichtung zum Aufzeichnen von Schallwellen auf Schallplatten
DE2213918C3 (de) Aufzeichnungsträger mit hoher Informationsdichte und Abtast- bzw. Wiedergabeeinrichtung hierzu
DE2529478A1 (de) Verfahren und vorrichtung zum aufzeichnen von informationen mittels laser- oder dergleichen strahlen
DE2547711A1 (de) Verfahren und vorrichtung zum einpraegen von informationen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19821103

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 8543

Country of ref document: AT

Date of ref document: 19840815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3260397

Country of ref document: DE

Date of ref document: 19840823

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: TELDEC SCHALLPLATTEN GMBH

ET Fr: translation filed
BECN Be: change of holder's name

Effective date: 19840718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19850430

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: TELDEC SCHALLPLATTEN GMBH TE HAMBURG, BONDSREPUBLI

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19860416

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870430

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19890403

Ref country code: AT

Effective date: 19890403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890430

Ref country code: CH

Effective date: 19890430

Ref country code: BE

Effective date: 19890430

BERE Be: lapsed

Owner name: TELDEC SCHALLPLATTEN G.M.B.H.

Effective date: 19890430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19891101

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19891228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920327

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940101

EUG Se: european patent has lapsed

Ref document number: 82102851.1

Effective date: 19900412